Effect of Zn substitution on morphology and magnetic properties of CuFe2O4 nanofibers

► Zn-doped CuFe2O4 nanofibers have been prepared by electrospinning. ► Zn content improves morphology of doped nanofibers and decreases the diameter. ► Saturation magnetization of nanofibers initially increases and then decreases. ► The coercivity and square ratio all decrease with increasing Zn2+ content. ► Cu0.6Zn0.4Fe2O4 nanofibers exhibit shape anisotropy.